Tsunoda Akira, Yamada Kazutaka, Takano Masahiro, Kusanagi Hiroshi
Department of Gastroenterological Surgery, Kameda Medical Center, 929 Higashicho, Kamogawa City, Chiba, 296-8602, Japan.
Department of Surgery, Coloproctology Center, Takano Hospital, Kumamoto, Japan.
Surg Today. 2016 Apr;46(4):414-21. doi: 10.1007/s00595-015-1179-2. Epub 2015 May 5.
The aim of the present study was to conduct a psychometric evaluation of the patient assessment of constipation quality of life scale (PAC-QOL) in the Japanese language.
The PAC-QOL was translated into Japanese. After being linguistically validated, the Japanese version of the PAC-QOL was administered to a sample of 121 patients. Validation studies were conducted to evaluate the internal consistency reliability (Cronbach's alpha), reproducibility [intraclass correlation coefficients (ICCs)], the convergent validity (correlated with the Short-Forum 36 Health Survey), the discriminant validity [correlated with the constipation scoring system (CSS)], the cross-sectional validity (analysis of variance models), and responsiveness (effect size) of the PAC-QOL scales.
The internal consistency was good for all of the scales (Cronbach's alpha coefficient >0.7) and reproducible (ICCs >0.7). The four scales of the PAC-QOL were significantly correlated with the Short-Forum 36 Health Survey (P < 0.01 except for the satisfaction subscale) and the CSS scores (P < 0.01 except for the satisfaction subscale). The PAC-QOL scale scores were significantly associated with constipation severity (P < 0.05). The effect size in patients reporting improvements in constipation over the treatment period was moderate to large, with a subscale effect size ranging from 0.69 to 1.18 and an overall scale effect size of 1.12. Similar findings were observed in the original validation study.
The linguistic and psychometric evaluation demonstrated the validity of the Japanese version of the PAC-QOL.
本研究旨在对便秘生活质量量表（PAC-QOL）日语版进行心理测量学评估。
将PAC-QOL翻译成日语。经语言验证后，对121例患者样本施测日语版PAC-QOL。开展验证研究以评估PAC-QOL量表的内部一致性信度（克朗巴哈系数）、重测信度[组内相关系数（ICC）]、收敛效度（与简短健康调查36项相关）、区分效度[与便秘评分系统（CSS）相关]、横断面效度（方差分析模型）及反应度（效应量）。
所有量表的内部一致性良好（克朗巴哈系数>0.7）且具有可重复性（ICC>0.7）。PAC-QOL的四个量表与简短健康调查36项（满意度子量表除外，P<0.01）及CSS评分（满意度子量表除外，P<0.01）显著相关。PAC-QOL量表评分与便秘严重程度显著相关（P<0.05）。在报告治疗期间便秘有改善的患者中，效应量为中等至较大，子量表效应量范围为0.69至1.18，总量表效应量为1.12。在原验证研究中观察到类似结果。
语言和心理测量学评估证明了PAC-QOL日语版的有效性。
